A field used to select data for display purposes through a query. For example, data is too dense for display on a map at a particular scale.
Australia uses this field to enter the scale at which the data is to be displayed. E.g. options are: 25000, 50000

The United Nations Code for Trade and Transport Locations (UN/LOCODE) is a geographic coding scheme developed and maintained by United Nations Economic Commission for Europe, a unit of the United Nations. UN/LOCODE assigns code elements to locations with functions such as seaports, airports, and other locations used in trade and transport. Each code element consists of five characters, where the two first indicate the country (according to ISO standard 3166-1) and the three following represent the place name. For more information visit http://www.unece.org/cefact/locode/